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    v1.0.30
    OpenPayerBilling CodesProcedures / Professional ServicesHCPCS hcpcs-g0008-influenza-vaccine-administration
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    HCPCS G0008: Administration of Influenza Virus Vaccine

    HCPCS Level II code G0008 denotes the administration of an influenza virus vaccine, representing a vaccination service typically provided as a single immunization event; the service type is vaccine administration and the typical site of service is outpatient settings such as physician offices, clinics, and community vaccination sites.

    For related coverage guidance, see recent payer policy updates: Percutaneous Electrical Nerve Field Stimulation for Functional Abdominal Pain Disorders, Esophagogastroduodenoscopy (EGD) Coverage Policy, Radiofrequency Therapy for Fecal Incontinence.

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    Table of contents

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    Clinical & Coding Specifications

    Clinical Context

    An adult patient presents to a primary care clinic during influenza season requesting routine immunization. The patient is screened for contraindications and contraindicated allergies, consent is obtained, and vital signs are documented. A licensed nurse or medical assistant prepares the appropriate influenza vaccine formulation, documents lot number and expiration, and administers the vaccine intramuscularly in the deltoid muscle. Post‑vaccination observation for 15 minutes is provided for patients with history of syncope or immediate allergic reactions. Documentation includes vaccine name, manufacturer, lot number, expiration date, route, site, dosage, date and time, administering provider taxonomy, and counseling provided. Billing uses HCPCS Level II code G0008 for administration of influenza virus vaccine for vaccine-only encounters or when payer policy requires a vaccine administration code distinct from vaccine product codes.

    Related CPT Codes

    CPT CodeDescriptionRelationship to This Procedure
    90471Immunization administration (intramuscular, single or first component)Commonly billed for influenza vaccine administration when payer prefers CPT vaccine administration codes instead of HCPCS Level II G0008.
    90472Each additional vaccine component, per administrationUsed when multiple vaccine components are administered during the same encounter in addition to the influenza vaccine.
    90460Immunization administration percutaneous, intradermal, subcutaneous, or intramuscular; first vaccine/toxoid component (includes counseling) when performed with another E/M serviceUsed when vaccine administration includes counseling and is reported with a separate E/M on the same day per payer rules.
    90686Influenza virus vaccine, quadrivalent, for intramuscular use, split virus, preservative-free, 0.5 mL dosage (manufacturer-specific codes vary)Vaccine product codes are reported in conjunction with administration code; product code selection depends on specific vaccine used.
    90474Each additional single vaccine administration (intramuscular or subcutaneous)Used if multiple injections are administered and payer requires reporting of each injection separately.

    Related Modifiers

    5 rows

    ModifierDescriptionWhen to Use
    25CPT modifier 25 indicates that on the same day as another procedure or service, the same physician or other qualified health care professional provided a significant, separately identifiable…- When to apply: Use modifier 25 only on an E/M code to indicate the same provider delivered a significant, separately identifiable E/M service on the same day as another procedure or service — i.e.,…
    59Modifier 59 indicates a distinct procedural service when two procedures that are not normally billed together are clinically and procedurally separate. The CPT definition (as reiterated by CMS)…- Use modifier -59 to report a distinct procedural service when documentation supports that the procedure reported is not normally billed together with another service on the same day because of a…
    76Modifier -76, Repeat Procedure or Service by Same Physician or Other Qualified Health Care Professional, is appended when the same provider performs an identical, medically necessary procedure or…- Use modifier -76 when the same physician or other qualified health care professional performs an identical procedure or service a second (or subsequent) time on the same date of service and the…
    78CPT modifier -78 indicates an unplanned, related return to the operating or procedure room by the same provider during the global postoperative period. It is appended when treatment for a…- Use modifier -78 when an unplanned, related complication during the original procedure’s global postoperative period requires the patient to return to a formal operating or procedure room and the…
    97Modifier 97 is an informational modifier used with therapy CPT codes to indicate services are rehabilitative — intended to restore skills or function lost due to illness, injury, or disability. It is…- Use modifier 97 when reporting therapy services that are rehabilitative in nature — i.e., provided to restore skills or function lost or impaired because of illness, injury, or disability (for…

    Related Provider Taxonomies

    8 rows

    Taxonomy Code
    208000000X
    207Q00000X
    367500000X
    341600000X
    364S00000X
    133N00000X
    207XS0106X
    183500000X

    Related ICD-10-CM Codes

    27 rows

    ICD-10-CM CodeDescription
    D50.9Iron deficiency anemia, unspecified
    E11.9Type 2 diabetes mellitus without complications
    E78.5Hyperlipidemia, unspecified
    F17.200Nicotine dependence, unspecified, uncomplicated
    I10Essential (primary) hypertension
    I50.9Heart failure, unspecified
    J00Acute nasopharyngitis [common cold]
    J02.9Acute pharyngitis, unspecified
    J06.9Acute upper respiratory infection, unspecified
    J10.1Influenza due to other identified influenza virus with other respiratory manifestations

    Showing 1–10 of 27

    Related Payer Policy Updates

    Specialty: Gastroenterology1 / 3

    10 rows

    PolicyPayerEffective Date
    Percutaneous Electrical Nerve Field Stimulation for Functional Abdominal Pain Disordersbcbsvermont2026-12-01
    Esophagogastroduodenoscopy (EGD) Coverage Policyevicore2026-11-05
    Radiofrequency Therapy for Fecal IncontinenceCigna2026-10-15
    Magnetic Sphincter Augmentation for the Treatment of Gastroesophageal Reflux Disease (GERD)univerahealthcare2026-10-15
    High-Resolution Anoscopy (HRA)Premera Bluecross2026-10-01
    Gastroesophageal and Gastrointestinal (GI) Services and ProceduresColorado Rocky Mountain Health Plans2026-10-01
    Fecal Analysis in the Diagnosis of Intestinal Dysbiosis and Fecal Microbiota Transplant TestingOscar Health2026-10-01
    Serum Testing for Hepatic Fibrosis in the Evaluation and Monitoring of Chronic Liver DiseaseOscar Health2026-10-01
    Pancreatic Enzyme Testing for Acute PancreatitisOscar Health2026-10-01
    Helicobacter pylori TestingOscar Health2026-10-01

    Related Codes

    HCPCS-G9490-HOME-ASSESSMENT-NON-HOMEBOUND

    HCPCS G9490: Home Visit Patient Assessment for Non-Homebound Beneficiary

    HCPCS-G0009-PNEUMOCOCCAL-VACCINE-ADMINISTRATION

    HCPCS G0009: Administration of Pneumococcal Vaccine

    HCPCS-G0010-HEPATITIS-B-VACCINE-ADMINISTRATION

    HCPCS G0010: Administration of Hepatitis B Vaccine

    HCPCS-G0011-PREP-COUNSELING-HIV-RISK-REDUCTION-ADHERENCE

    HCPCS G0011: Individual PrEP Counseling, HIV Risk Assessment

    HCPCS-G0012-PRE-EXPOSURE-PROPHYLAXIS-INJECTION-HIV-PREVENTION

    HCPCS G0012: Injection of PrEP Drug for HIV Prevention

    HCPCS-G0013-PREP-INDIVIDUAL-COUNSELING-HIV-RISK-REDUCTION

    HCPCS G0013: Individual PrEP Counseling by Clinical Staff

    HCPCS-G0017-PSYCHOTHERAPY-CRISIS-FIRST-60-MINUTES-NON-OFFICE

    HCPCS G0017: Psychotherapy for Crisis, First 60 Minutes

    HCPCS-G0018-PSYCHOTHERAPY-CRISIS-ADDITIONAL-30-MINUTES-NON-OFFICE

    HCPCS G0018: Psychotherapy for Crisis, Additional 30 Minutes

    HCPCS-G0019-COMMUNITY-HEALTH-INTEGRATION-SDOH-CARE-COORDINATION

    HCPCS G0019: Community Health Integration, Person-Centered Assessment

    HCPCS-G0022-COMMUNITY-HEALTH-INTEGRATION-ADDITIONAL-30-MIN

    HCPCS G0022: Community Health Integration, Additional 30 Minutes

    Showing 1–10 of 1996

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    Frequently Asked Questions

    References

    1. 1.CPT® Codes and Descriptions. AAPC. Retrieved Aug 11, 2026.Maintains the CPT code set's official descriptions and guidelines, licensed from the American Medical Association, used as the definitional source for CPT codes on this page.
    2. 2.HCPCS Quarterly Update. Centers for Medicare & Medicaid Services (CMS). Retrieved Aug 11, 2026.CMS's quarterly release of HCPCS Level II codes and short/long descriptors, the source for HCPCS code definitions and update history.
    3. 3.ICD-10-CM Full Code List. Centers for Medicare & Medicaid Services (CMS). Retrieved Aug 11, 2026.CMS's complete ICD-10-CM diagnosis code list, used to cross-reference diagnosis codes associated with this procedure or service.
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